The 8GHZ Project U.S.A.

**V2-V3** · 02-04-2007, 07:24 PM

We here in Team NexGen are at Nexgen Consulting trying to break the world record right now, with (hopefully) a bit of help from koolance, and some LN2 or LHe4. We have a P5B deluxe, 631 cedarmill (ES), and 2 X 512MB Micron D9GKX Memory modules. So far we have hit 5.5ghz no problem but beyond 1.4v Vcore Air, water, and even our Prometeia Capped out under the heat load generated by the P4 631. But 4ghz at 1v was pretty cool. The use of Liquid Nitrogen is our best bet at breaking the 8179.89 MHz INTEL Pentium 4 631 (Cedar Mill) world record and bringing the title back to the good ole U.S.A.
Current World Record Held by "ThuG OC Team Italy"

Custom Built Phase cooling Rig

Custom Built DI/LN2 container

Charging the Phase unit w/ R134a

LN2 runs w/ P5B, P4 631 (ES), D9GMH, Koolance 200W NB watercooling, Rev 1 copper LN2 Container

QX6700 on LN2 at PDXLAN 9

Dry Ice Overclocking W/ P4 631 (ES), Koolance NB,SB, Vreg WaterBlocks, and Koolance 1200W Liquid cooled PSU

P5B Vcore Vmod W/ 50K OHM Potentiometer

Pouring the LN2 into the hand flask

Three of five IHS removals for this project.

Liquid Nitrogen pots

Water cooled test bench: Koolance CPU 330, CHC 120, and Vreg blocks w/ Koolance 1200W Liquid cooled PSU

**phelan1777** · 02-04-2007, 07:43 PM

<<<grabs a front row seat and some popcorn

I can't offer help, but I can sure watch.

Welcome to XS.

**TopherTony** · 02-04-2007, 07:56 PM

looking sharp, cant wait to see the results, keep us posted, but i know you will anyway

**supa-fly** · 02-04-2007, 08:06 PM

I want a back stage pass for this...
When are taking bookings???

**Gautam** · 02-04-2007, 08:07 PM

It looks like you guys have the right hardware in your hands, but the brazed container might hold you back...also, is you board vcore modded?

Best of luck.

**Temujin** · 02-04-2007, 09:06 PM

Hmmmm very interesting. Koolance cooling is plenty capable of 4GHz, but at some point the blocks can't transfer heat fast enough.

Yep, probably have the volt mod set up already. I'll keep checking back to see what kind of progress you make. Good luck!

**ozzimark** · 02-04-2007, 09:21 PM

i can get a 631 up to 5.3ghz on air cooling.. so heat definitely shouldn't be that much of an issue with water...

**afireinside** · 02-04-2007, 09:25 PM

Why is the ln2 pot so damn tall? You could cut about 2 feet off...

**NickS** · 02-04-2007, 09:27 PM

Can't wait for results

. Go go go for 8GHZ!

Originally Posted by buttertoast

Is that tube made out of BOXed cooler?

To be honest, I don't think that 8GHz will be possible with that tube

Someone hook them up with a Dragon Evo

**blind_ripper** · 02-04-2007, 09:28 PM

like Gautam sayd the tube looks like it has been in WW2 or something like that !
if u veel hot with 1.4vcore u should give a run @ 2vcore , it seems u guys have te hard-ware and the helpings hand .
but if i have to say what i think i dont see this happen really , thouge i wish u guys the best off luck

**V2-V3** · 02-04-2007, 09:35 PM

Originally Posted by ozzimark

i can get a 631 up to 5.3ghz on air cooling.. so heat definitely shouldn't be that much of an issue with water...

Our experience with ES chips leads me to believe that the IHS mounting process isn't perfected until around the production of the Retail chip. If your lucky the thermal resistance on your ES should not be as bad as ours. As this is the worst case we have come across to date.
with a stock frequency of 3GHZ and the Vcore at 1.6v The Koolance CPU 305 Block temp was 24C and the IHS was 27C but the Die temp was still 76-82C! the removal of the IHS should solve the temperature differential.
We saw very similar readings with the Koolance CPU 300, Intel Boxed cooler, and the Zalman 9500Cu.

I'm currently in the process of removing Dielectric grease from motherboard and will test the Voltage Temperature curve once again with Air, Water, Chilled water, Phase, and LN2 will be last.

Originally Posted by afireinside

Why is the ln2 pot so damn tall? You could cut about 2 feet off...

We are looking at having a 2" diameter cylinder of copper milled to our specifications for Direct Die cooling.
Most of what has been built was to get the LN2 on the chip and see what was going to happen at -196C
we had two 12" copper tubes some couplings and a few P4 boxed coolers laying around so we put them to good use. The copper cylinder in the P4 Boxed cooler just happens to be the right sice for direct Die cooling with a LGA775 socket.

Originally Posted by blind_ripper

like Gautam sayd the tube looks like it has been in WW2 or something like that !
if u veel hot with 1.4vcore u should give a run @ 2vcore , it seems u guys have te hard-ware and the helpings hand .
but if i have to say what i think i dont see this happen really , thouge i wish u guys the best off luck

At 1.7vcore With the IHS and LN2 we saw -75c on the back of the board
More surface area in the LN2 block is definitely needed.
For NON OC testing it worked rather well considering it cost us absolutely no $$$$ to make thanks to Intel!

**IFMU** · 02-04-2007, 09:45 PM

Lets be nice here folks.. no reason to get rude or anything.

Should be interesting to see if you can pull it off, luck to yea indeeds.

I am far from knowing alot about LN2, but I think Id agree with the thoughts so far, not to sure about that cooling tube there.
From what Ive seen, a solid tube is best and Id say that height might be a bit overkill.
Either way, keep us informed of what you do reach and again, Luck!~!

**steelballzz** · 02-05-2007, 12:50 AM

**hot_fifty** · 02-05-2007, 04:31 AM

gl, you gonna need it... Lets so some P4 at 15sec 1m

**dinos22** · 02-05-2007, 04:47 AM

nice going for a couple of posts

looking forward to results

**[XC] gomeler** · 02-05-2007, 05:23 AM

Don't listen to all the haters :-D I can't wait to see what sort of damage you guys can do with that CedarMill. I anything that pot is a great learning tool for when you guys get your milled pots in. Goodluck guys, break 8GHz and then some!

**SoF** · 02-05-2007, 05:41 AM

Originally Posted by steelballzz

me 2

I like thoose "reported from the very first minute" stories.
High hopes you have there, but 8 gig isn't something you can grab by the way.
Would like to hear if the board is modded, if not - do it!
And I recommend some gloves for handling LN2 - some ppl. here can tell you: it burns!

**[XC] riptide** · 02-05-2007, 05:46 AM

Originally Posted by phelan1777

<<<grabs a front row seat and some popcorn

I can't offer help, but I can sure watch.

Welcome to XS.

<<< Kicks phelan out of said seat and robs him of his popcorn. "Phelan... theres not enough butter on these!!!!!"

Thread subscribed. Best of luck guys.

**before** · 02-05-2007, 06:47 AM

Nice stuff here so far... I'm looking forward to see the clockin' results.

**Gebba** · 02-05-2007, 08:13 AM

nice cpu tube

!

**principino1984** · 02-05-2007, 08:29 AM

wanna see this one... keep goin guys!

Marco

**lasse.j5** · 02-05-2007, 08:33 AM

looks interesting. GL guys!

**MarlboroMan** · 02-05-2007, 08:59 AM

keep pushing guys!

**Brettbeck** · 02-05-2007, 09:04 AM

Like it's already been said, that brazed tube is WAY too tall. If you're attempting a world record, ideally you want at least a solid base on a pot. Completely solid would be your best bet.

And as far as length of the tube, you probably only need 20-25cm. Any longer and ther isn't really any point.

**~~Drag~~** · 02-05-2007, 09:17 AM

i would love to see this attempt, but it won't make thesame news as the 8ghz project did i think

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